Personalized Little Sister - I Love My Big Sister T-Shirt. Celebrate your sisterhood with I Love My Big Sister. Our apparel and gifts are designed to show your love for your older sibling. With our range of products, you can let the world know how much you appreciate them. It's also the perfect pregnancy announcement idea - share your joy with the world! Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.